Effect of droplet impact on molten pool dynamics in hybrid laser-MIG welding of aluminum alloy

doi:10.1007/s00170-017-1509-1

IMECH-IR > 先进制造工艺力学实验室

	Effect of droplet impact on molten pool dynamics in hybrid laser-MIG welding of aluminum alloy
	Chen XY(陈旭阳); Yu G(虞钢); He XL(何秀丽); Li SX(李少霞); Miao HB(苗海宾)
发表期刊	INTERNATIONAL JOURNAL OF ADVANCED MANUFACTURING TECHNOLOGY
	2018-04-01
卷号	96 期号:2018-01-04 页码:209-222
ISSN	0268-3768
摘要	In order to investigate the effect of droplet impact on molten pool dynamics in hybrid laser-MIG (metal inert gas) welding, a three-dimensional mathematical model was developed, and a new approach to simulate the droplet impact was proposed. In the model, the droplet heat and impact under the influence of laser was considered, and the deformation of molten pool was calculated with considering droplet impact and arc pressure. To simplify the model, a modified body heat source model was presented for laser source to take into account multiple reflections and Fresnel absorption. Surface tension, electromagnetic force, and buoyancy were considered to calculate the fluid flow pattern. Furthermore, several dimensionless numbers were used to recognize the importance of the driving forces in molten pool. It was found that molten pool dynamics and final weld bead geometry were strongly affected by the droplet impact. To demonstrate the importance of droplet impact, the temperature, velocity distribution, and the deformation of molten pool were analyzed and compared under different conditions. With considering droplet impact, the penetration was bigger, and the width was smaller. Furthermore, the simulated weld bead geometry was in good agreement with experimental measurement.
关键词	Droplet impact Hybrid laser-MIG welding Aluminum alloy Molten pool dynamics Simulation
DOI	10.1007/s00170-017-1509-1
URL	查看原文
收录类别	SCI ; EI
语种	英语
WOS记录号	WOS:000428797500016
关键词[WOS]	NUMERICAL-SIMULATION ; HEAT-TRANSFER ; GAS-METAL ; TRANSPORT ; MODE ; 304-STAINLESS-STEEL ; SOLIDIFICATION ; SYSTEMS ; STEEL
WOS研究方向	Automation & Control Systems ; Engineering, Manufacturing
WOS类目	Automation & Control Systems ; Engineering
项目资助者	National Natural Science Foundation of China [11272316, 11272317, 11672304, 11502269] ; Chinese Academy of Sciences [yz201636]
论文分区	二类
力学所作者排名	1
引用统计	被引频次：29[WOS] [WOS记录] [WOS相关记录]
文献类型	期刊论文
条目标识符	http://dspace.imech.ac.cn/handle/311007/77807
专题	先进制造工艺力学实验室
作者单位	1.Chinese Acad Sci, Inst Mech, Key Lab Mech Adv Mfg, Beijing 100190, Peoples R China 2.Univ Chinese Acad Sci, Sch Engn Sci, Beijing 100049, Peoples R China
推荐引用方式 GB/T 7714	Chen XY,Yu G,He XL,et al. Effect of droplet impact on molten pool dynamics in hybrid laser-MIG welding of aluminum alloy[J]. INTERNATIONAL JOURNAL OF ADVANCED MANUFACTURING TECHNOLOGY,2018,96,2018-01-04,:209-222.
APA	陈旭阳,虞钢,何秀丽,李少霞,&苗海宾.(2018).Effect of droplet impact on molten pool dynamics in hybrid laser-MIG welding of aluminum alloy.INTERNATIONAL JOURNAL OF ADVANCED MANUFACTURING TECHNOLOGY,96(2018-01-04),209-222.
MLA	陈旭阳,et al."Effect of droplet impact on molten pool dynamics in hybrid laser-MIG welding of aluminum alloy".INTERNATIONAL JOURNAL OF ADVANCED MANUFACTURING TECHNOLOGY 96.2018-01-04(2018):209-222.

条目包含的文件		下载所有文件
文件名称/大小	文献类型	版本类型	开放类型	使用许可
IrJ2018192.pdf（4943KB）	期刊论文	出版稿	开放获取	CC BY-NC-SA	浏览下载